If you look at the geometry of how all the pieces fit together, it's not a tensile stress that is going to break the straps. If you're putting a lot of power through the clutch, it's possible.. but it's more likely that it's a compression stress that is breaking the straps. When you downshift hard or powershift the car, the engine is spinning faster than the drivetrain, so those straps are being pushed instead of pulled. when they get pushed, they bend in the middle, and twist the rivets. Once this happens, the strap either breaks at one of the rivets, or shears one of the rivets off. At this point you have a strap of metal attached to one rivet flailing around in there like a weed whacker. Sounds great until the other rivet breaks and the piece of metal gets ejected from your clutch.
The double or triple straps help with the tensile stress, but they do more to prevent the straps from bending when they are compressed like that. ----- Original Message ----- From: <[email protected]> To: <[email protected]> Sent: Tuesday, August 27, 2002 10:04 AM Subject: Re: [A2-16v] F'ing clutches... > > In a message dated 8/27/02 8:14:48 AM, [email protected] writes: > > << << The revs have nothing to do with it. Esp since once > > you pass 6500 rpm or so, you're on the downslope of > > the hp and torque curves. The clutch has already > > bitten and held, whether you're at 4000 rpm or 8000 > > rpm... > > >> > > > I agree with the revs issue....I know a few people that > > have broke the straps on high reving 16vs.... >> > > - I should point out that my last Sachs clutch did not break as I was revving > out, it broke right when I pressed on the clutch pedal with the motor at > 7000rpms. > _______________________________________________ > A2-16v mailing list > [email protected] > http://maillist.myip.org/mailman/listinfo/a2-16v > For list archives, see listinfo link above. > >
